Maintain your chainsaw and harvester chain like a pro with this top quality German made file. Pferd regular cut round files remove material quickly and efficiently. The aggressive spiral cut tooth pattern of the file is less likely to load up like fine cut files also. Pferd regular cut files leave an even, scratch free cutting edge with very little effort. Files are approximately 8" long, excluding tang. 7/32" files are used to sharpen 3/8" pitch and .404" pitch chainsaw and harvester chains. One dozen files (2 boxes of 6 files).Sharpens the following chainsaw and harvester chains:Carlton All A1, A2, A3 and B2, B3, B5 series chainsHusqvarna H/S51, H/S47, H/S46, H/S80, H/S54, H/S48, H/S42, H/S81, H/S50, H/S45, H57, S57, H64, S64Oregon All 72, 73, 75 and 16, 18, 27, 52, 59, 68 series chainsStihl All 33, 35, 36 and 46 series chainsWoodlandPRO 30RC, 38RC, 33RC, 30RCS, 30SC, 30SCS, 30RP, 38RP, 33RP, 43RC, 43RCS, 48H